diff --git a/Cargo.lock b/Cargo.lock
index 280919058..e4129d369 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -558,9 +558,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.109"
+version = "1.0.114"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb0652c533506ad7a2e353cce269330d6afd8bdfb6d75e0ace5b35aacbd7b9e9"
+checksum = "c5f09b1bd632ef549eaa9f60a1f8de742bdbc698e6cee2095fc84dde5f549ae0"
 dependencies = [
  "itoa",
  "ryu",
diff --git a/Cargo.toml b/Cargo.toml
index 6ca12917c..f6852d088 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ streaming-iterator = "0.1.5"
 bitflags = "1.2.1"
 humantime = {version = "2.1.0", optional = true}
 serde = {version = "1.0.197", features = ["derive"], optional = true}
-serde_json = {version = "1.0.109", optional = true}
+serde_json = {version = "1.0.114", optional = true}
 bincode = {version = "1.3.1", optional = true}
 tskit-derive = {version = "0.2.0", path = "tskit-derive", optional = true}
 delegate = "0.12.0"
@@ -33,7 +33,7 @@ anyhow = {version = "1.0.79"}
 clap = {version = "4.4.6", features = ["derive"]}
 serde = {version = "1.0.197", features = ["derive"]}
 serde-pickle = "1.1.0"
-serde_json = {version = "1.0.109"}
+serde_json = {version = "1.0.114"}
 bincode = "1.3.1"
 rand = "0.8.3"
 rand_distr = "0.4.0"